1DV5

TERTIARY STRUCTURE OF APO-D-ALANYL CARRIER PROTEIN

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_15N-separated_NOESY	1.2 mM [U-15N]apo-Dcp, 50 mM phosphate buffer	90% H2O/10% D2O	50 mM phosphate	5.8	ambient	298
2	3D_13C-separated_NOESY	1.8 mM [U-15N,13C]apo-Dcp, 50 mM phosphate buffer	90% H2O/10% D2O	50 mM phosphate	5.8	ambient	298
3	2D 15N-filtered NOESY	1.2 mM [U-15N]apo-Dcp, 50 mM phosphate buffer	90% H2O/10% D2O	50 mM phosphate	5.8	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DMX	600

NMR Refinement
Method	Details	Software
torsion angle dynamics	The structures are based on a total of 1582 non-trivial upper-limit distance constraints (332 long-range, 560 medium-range, 372 sequential and 318 intraresidue), derived from 3288 assigned NOEs from 4 2D and 3D spectra. This corresponds to an average of 19.8 constraints/residue. No additional constraints were included. Structures were generated using the ANNEAL function of the program DYANA 1.5, with 8000 torsion angle dynamics steps for each structure. The average DYANA target function for the 30 conformers was 0.68 +/- 0.11. The average backbone atomic RMSD to the mean structure for residues 4-81 is 0.43 +/- 0.08 Angstroms, and 0.86 +/- 0.09 for all non-hydrogen atoms (residues 4-81).	Felix

NMR Ensemble Information
Conformer Selection Criteria	target function
Conformers Calculated Total Number	50
Conformers Submitted Total Number	30

Additional NMR Experimental Information
Details	Complete resonance assignments obtained with triple-resonance NMR data as described in the primary citation.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	Felix	95	Molecular Simulations
2	processing	NMRPipe		Frank Delaglio
3	refinement	DYANA	1.5	Peter Guntert
4	collection	XwinNMR	2.3	Bruker
5	data analysis	XEASY	1.3	Bartels